add examplecode for the new lua mapgen features.

data/multiplayer/scenarios/test_lua_mapgen.cfg

@@ -0,0 +1,25 @@
+#textdomain wesnoth-multiplayer
+#ifdef DEBUG_MODE
+#define LOAD_LUA_MAPGEN_TEST
+#enddef
+#endif
+
+#ifdef EDITOR
+#define LOAD_LUA_MAPGEN_TEST
+#enddef
+#endif
+
+#ifdef LOAD_LUA_MAPGEN_TEST
+[multiplayer]
+    # This id is currently hardcoded by the random map generator of the editor
+    id=multiplayer_test_lua_mapgen
+    name= _ "Lua Mapgen Maritime"
+    description= _ "Testing new lua mapgen features"
+    map_generation=lua
+    [generator]
+		id="lua_mapgen_maritime"
+		config_name="Lua Mapgen Maritime"
+		create_map = "return wesnoth.dofile('{CURRENT_DIRECTORY}/test_lua_mapgen.lua')"
+    [/generator]
+[/multiplayer]
+#endif